Situational Awareness (Tuesday, 2026-01-13)
According to information from the Middle Atlantic River Forecast Center, no rain fell in the Potomac watershed during the past 24 hours and 0.01 to 0.25 inches are expected over the next 3 days.
Special Conditions
None
Daily flows:
Little Falls gage flow 2026-01-12: 1596 MGD (2470 cfs)
Little Falls gage flow 2026-01-13: 1680 MGD (est., based on recently available real-time data) (2600 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2026-01-12: 1435 MGD (2220 cfs)
Point of Rocks flow 2026-01-13: 1564 MGD (est., based on recently available real-time data) (2420 cfs)
Yesterday's estimated daily flows:
Great Falls estimated flow 2026-01-12: 1596 MGD (2469 cfs)
Note: Estimated flow below Great Falls intake is flow at Little Falls plus Little Falls water supply withdrawal.
Yesterday's Washington metropolitan area Potomac River withdrawals and discharges (2026-01-12):
Fairfax Water Corbalis withdrawal - Potomac: 80 MGD
WSSC Water Potomac withdrawal: 157 MGD
Washington Aqueduct withdrawal - Great Falls: 118 MGD
Washington Aqueduct withdrawal - Little Falls: 0 MGD
Loudoun Water withdrawal: 9 MGD
Loudoun Water Broad Run discharge: 8 MGD
Total Potomac withdrawal: 363 MGD
Total net Potomac withdrawal: 355 MGD
Loudoun Water Potomac River (PR) flow values for drought operations protocol (based on yesterday's flows):
QPR: 2220 cfs
QPR, obs: 2220 cfs
QPR, WS: 0 cfs